Bumper mounting for flexible traffic door

ABSTRACT

A door having intermediate the ends thereof a pair of resilient bumpers fixedly located opposite each other on each side of the door, each of said bumpers including at least one threaded first recess extending partially therethrough from the face thereof in contact with the door and receiving the threaded end of a bolt extending through the door and at least one second recess extending partially therethrough from the face thereof in contact with the door and dimensioned to accommodate the head of said bolt, the thickness of material between each second recess and the face of the bumper remote from the door being such as to allow penetration therethrough of a driving tool for causing said bolt to enter a first threaded recess in the other of said bumpers.

lllte tates atet 1191 [111 3,858,357 McGuire Jan. 7, 1975 [5 BUMPERMUUNTING FQR lFLEXlBLE 3,295,589 1/1967 Pflegeret 61..... 160/327TRAFFIC DOOR [75] Inventor: Winston B. McGuire, Plattsburgh, PrimaryExammer*p.hlhp Karma" NY Attorney, Agent, or Fzrm-Spencer & Kaye [73]Assignee: W. B. McGuire Co., Inc., Hudson, [57] ABSTRACT N.Y. A doorhaving intermediate the ends thereof a pair of [22] Wed: June 1973resilient bumpers fixedly located opposite each other 2 App} 3 7 24 oneach side of the door, each of said bumpers includmg at least onethreaded first recess extendmg partially therethrough from the facethereof in contact [52] 49/460 16/86 29/526 with the door and receivingthe threaded end of a bolt 160/354 extending through the door and atleast one second [51] lltt. Cl E05!) 1/00 recess extending partiallytherethrough from the face [58] new of Search 49/460 34; 160/354?thereof in contact with the door and dimensioned to 16/86 86 86 111 2;accommodate the head of said bolt, the thickness of 293/62; 85/45;29/526; 42/74 material between each second recess and the face of thebumper remote from the door being such as to [56] References C'ted allowpenetration therethrough of a driving tool for UNITED STATES PATENTScausing said bolt to enter a first threaded recess in the 3,091,8186/1963 Clark 49/460 x other of said bumpers. 3,147,562 9/1964Pachmayr..... 42/74 3,263,359 8/l966 Pachmavr 42/74 Clams 4 DrawmgFlgures Patented Jan. 7, 1975 I 3,858,357 7 2 Sheets-Sheet 1 "a W I HUPatenfecl Jan. 7, 1975 3,858,357

' 2 Sheets-Shedt 2 FIG.4

BUMPER MUUNTIING HUM FLEXIBLE TRAFFIC DOOR The present invention relatesto doors particularly flexible traffic doors. In particular the presentinvention relates to the mounting of bumpers on such doors.

Doors, particularly flexible traffic doors, which are used, for example,between a warehouse and a loading platform or between an air conditionedroom and a room with normal temperature, and are normally opened as aresult of physical contact,by moving goods and are self closing byvirtue of being mounted in the door frame on rising hinges which causethe door to rise as it is opened and thus be biased to the closedposition, are usually provided with bumpers formed of a flexibleresilient material, such as rubber. Such bumpers are normally located onboth sides of the door opposite each other and intermediate the endsthereof suitably about 4 feet from the bottom of the door thus allowingfor impact on the door by the goods being moved therethrough. Heretoforeit has been necessary in mounting the bumpers on the door by means ofbolts to provide the bumpers with holes in the outer surface in order toprovide access to the bolts for a driving tool which tools areundesirable.

The present invention provides a novel bumper which may be mounted ondoors such as flexible traffic doors by means of bolts and at the sametime provide bumper surfaces without observable holes.

According to the present invention therefore there is provided a doorhaving intermediate the ends thereof a pair of resilient bumpers fixedlylocated opposite each other on each side of the door each of saidbumpers including at least one threaded first recess extending partiallytherethrough from the face in contact with the door, each first recessreceiving the threaded end of a bolt extending through said door and atleast one second recess extending partially therethrough from the facethereof in contact with the door and dimensioned to accommodate the headof said bolt, the thick ness of material between each second recess andthe face of the bumper remote from the door being such as to allowpenetration therethrough with a driving tool causing said bolt to entera first threaded recess in the other of said bumpers.

The present invention also provides a bumper for use in the aforesaiddoor including at least one first recess extending partiallytherethrough from the face thereof for contact with the door, each firstrecess being threaded to receive the threaded end of a bolt and at leastone second recess extending partially therethrough from the face thereoffor contacting the door and dimensioned to accommodate the head of saidbolt, the thickness of the material between each second recess and theface of the bumper opposite to said contact face being such as to allowpenetration therethrough of a driving tool for said bolt.

Preferably, each bumper is provided with a plurality of said first andsecond recesses to provide for complete rigid and safe attachment of thebumpers to the door.

The bumpers are made of a flexible resilient material, preferably aflexible resilient plastics material such as rubber.

The present invention will be further illustrated by way of theaccompanying drawings in which:

FIG. 1 is a front elevation partially broken away of a door assembly inaccordance with a preferred embodiment of the present invention;

FIG. 2 is a section taken along the line 2-2 in FIG.

FIG.

FIG. 3 is a detail section through bumpers on the doors in FIG. Ishowing the attachment of the bumpers to the door, and FIG. 4 is anexploded detail view showing the attachment of the bumpers to the doorin FIG. ll.

Referring to the drawings the door assembly comprises a pair of impacttraffic doors 1. The doors 1 are identical in structure and mountingwithin the door jambs and as such only one door I has been showncompletely. Each door 1 comprises a clear plastics upper portion 2 and aflexible rubber lower portion 3 which portions 2 and 3 are formedtogether at bumpers 4. The doors 1 in their closed position have anoverlap 6 and are held closed by the magnet assembly 7.

Each door 1 includes a door frame 8 comprising a top steel frame 9, asteel gusset 10 and a side steel frame 11 all of which are bolted to theupper and lower portions 2 and 3 by bolts 5. The door l is mounted onthe door jamb 12 by a door shaft 13 to which shaft 13 the frame 11 isbolted by bolts 14. A reinforced rubber seal 15 extends between thelongitudinal edge of the side steel frame II and the door jamb 12. Theupper end of the upper portion 2 comes within about A inch of the headerdoor jamb 16. The shaft 13 is vertically slideable in an upper V-camgravity hinge with an orlite bushing bolted to the door jamb ll2. Theshaft 13 has fixedly attached thereto a V-cam follower 22 at the hinge17. On opening, the door 1 rises due to the inter action between thehinges l7 and the cam follower 22 and as such the door 1 will closeunder the action of gravity. To facilitate faster closing of the door 1the shaft 13 is provided at the lower end thereof with a compressionspring 25 having a washer 26 at the upper end thereof and an adjustablecollar 27 at the lower end thereof which is releasably fixedly held onthe shaft 13 by set screws. When the door 1 is opened the spring 25 iscompressed against the washer 26. Up to the present the door asdescribed in the drawings is a conventional door.

In accordance with the present invention and referring specifically toFIGS. 3 and 4 a bumper 4 is attached to either side of the door 1.. Inassembly, a first bumper d which is made of rubber is attached to oneside of the door 1 by bolts 18 which extend through the door 1 and arereceived in threaded socket 19 in the first bumper 4..

A second similar bumper 4 is then attached to the other side of the door1 by bolts 20 which also extend through the door 1 and are received inthreaded sockets 21, in the second bumper 4. The second bumper 4 hasrecesses 24 therein to accommodate the heads of the bolts 18 andthefirst bumper 4 has a recess 28 therein to accommodate the head of thebolts 20. In the first bumper 4 the recess 28 has sufficient depth thatthe rubber 29 is sufficiently thin as to provide easy access to adriving tool 30 for tightening the bolts 20.

I claim:

1. A door having intermediate the ends thereof a pair of resilientbumpers fixedly located. opposite each other on each side of the door,each of said bumpers including at least one threaded first recessextending partially therethrough from the face thereof in contact withthe door and receiving the threaded end of bolts extending through thedoor, each of said bumpers containing at least one second recessextending partially therethrough from the face thereof in contact withthe door and dimensioned to accommodate the head of said bolts, thethickness of material between each second recess and the respectivefaces of the bumpers remote from the door being such as to allowpenetration therethrough of a driving tool for causing said bolts toenter said threaded recesses in the respective other of said bumpers.

2. A door as claimed in claim 1 in which each bumper includes aplurality of said first and second recesses.

3. A door as claimed in claim 2 in which at least one of the bumpers ismade of rubber.

4. A resilient bumper for attachment to a door including at least onefirst recess extending partially therethrough from the face thereof forcontacting the door and being threaded to receive the threaded end of afirst bolt, and at least one second recess extending partiallytherethrough from the face thereof for contacting the door anddimensioned to accommodate the head of a second bolt, the thickness ofmaterial between each second recess and the face of the bumper oppositesaid contact face being such as to allow penetration therethrough of adriving tool for the head of said second bolt.

5. A bumper as claimed in claim 4 including a plurality of said firstand second recesses.

6. A bumper as claimed in claim 4 formed of rubber.

* l= l l

1. A door having intermediate the ends thereof a pair of resilientbumpers fixedly located opposite each other on each side of the door,each of said bumpers including at least one threaded first recessextending partially therethrough from the face thereof in contact withthe door and receiving the threaded end of bolts extendinG through thedoor, each of said bumpers containing at least one second recessextending partially therethrough from the face thereof in contact withthe door and dimensioned to accommodate the head of said bolts, thethickness of material between each second recess and the respectivefaces of the bumpers remote from the door being such as to allowpenetration therethrough of a driving tool for causing said bolts toenter said threaded recesses in the respective other of said bumpers. 2.A door as claimed in claim 1 in which each bumper includes a pluralityof said first and second recesses.
 3. A door as claimed in claim 2 inwhich at least one of the bumpers is made of rubber.
 4. A resilientbumper for attachment to a door including at least one first recessextending partially therethrough from the face thereof for contactingthe door and being threaded to receive the threaded end of a first bolt,and at least one second recess extending partially therethrough from theface thereof for contacting the door and dimensioned to accommodate thehead of a second bolt, the thickness of material between each secondrecess and the face of the bumper opposite said contact face being suchas to allow penetration therethrough of a driving tool for the head ofsaid second bolt.
 5. A bumper as claimed in claim 4 including aplurality of said first and second recesses.
 6. A bumper as claimed inclaim 4 formed of rubber.